Grinding or abrading wheel.



EZRIL F. LANDIS, OF WAYNESBORO, PENNSYLVANIA.

GRINDING OB ABBADING WHEE'L.

8pecification o! Letten Pa.tont.

Patentecl. Jan. 19, 1909.

Appli cltlou fi1e November 2B, 1907. 8urh.l H0. 404,277.

T0 all wham it nur. com:em:

Be it known mt I, Ezm F. Lmxm-z, a citizen cf the United Stabes, residing at Waynesboro, in the-county of Franklin and Stute cf Pennsylvania, have invented certain new and useful Improvements in Grinding er Abmding Wl1eels, of which the following is a specification.

Th1s invention relates to an improved grinding or abrading-whcel und its Primury object is the construction 'of u. whee lmving a plurality of transverse peripheral grooves und a plurality of openin *s extending transverscly throu h the whec and arranged in n. sluralit y 0 circulur series sa.id groovcs an openmgs being arrangeml obliquely to the uns of the wheel und the openings of adjacent series havin their obliquity in opposite directions. these menns the grmding-wheel will at a times have n series of circmnferential ooves urrangecl .ut an angle to the nxis 0 the wheel so thut the edges cf the grooves act 011 the object being ground er pglished in a shearing manner, whereby a more eilective grinding uction is obtained and thp tendency of the grinding surface glazing 1s reduced to the mmimum. The openings of auch series am sta gered with respect to the 0 enings of o. jacent series so that the materxal between tha openings cf any one se ries bridges the openm of the next series neuer the axis of t e wheel. By means of this construction the formation of o enin in tha wheel dass not maberially weafien. t e latber.

Iha invention consis ts in an abradingbody having lateral grooves und openin arrnh ed in the manner .hereinafter escrihe and garticularly pointed out in the apg;anded cla1ms.

the drawings-Fi re 1 is a. side elevation oi an abrading-w eel embodyin my inventicn. Fig. 2 is an cdga view 0 the same. Fig. 3 1s a. transverse section taken online 3-8, Fig. 1.

Refcrring now to the drawings in detail, like letters o f rcferenca refer to I1ke Parts in the several figures.

The referenoe Ietter A des1gniziea tha wheel hnving a sories of peri(yheral grooves B, comparatwely narrm v an deep und extendirg across tl1e abradxn g or grindjng face Gi1 eL erably ab an angle to the ans of the w D designates transverse openin in fixe wheel whmh are also compa.mtiv y narrow und high und arrunged in a plurality of circular series. Tl1e openings of the outer circul:u series havo their unter walls arm ad the same distzmce from :he gn'nding ac ns the rmer Walls of the perip eml grooves, und the y um disposed m radial lmes between s:ud grooves. Said openings am also gluced nt an angle bo th'e axis of the wheel,

ut in a direction ogposite that of tha' periphernl grooves. T eremainin circula.r series of openings ure similar to t e oubermost scries with be exception thut thedirection of obliquity of the openi ngs of alternate series is opposite tlmt cf t1e outermost series of openmgs.

In use, the nnding-wheel becomes worn awny, and w an the eripheral grooves vamsh, the openings of 1e outermost series become uncovered, und when said 0 enings become ground a.way und vanish, t e second series of openings become uncovcre, this being continued until the grindi'ng surface is worn to the inner ends ofthe openings of the last seriesauch series of openin s wl1en uncovered lry tl1a wearing away o the wheel, becomas peripheral grooves.

By stnggering the openings und changlng the dirent.xon of the angle in ultetnate senes, es shown, the wheel 1s weakened but v little am! u. perfectly durable wheel ms obtained which has many advantages over solid wheel.

Havin thus describe my nniimt1on, whnbI aim is,

1. An abrad1ng-wheel having s senes of peripheral openings w ose outer w alls are the same d1stance fro -tl aa grindmg surface as the inner vml]s 0 said rooves.

2. An abra.ding-w eel hriving a sqnes of peripheral grooves arrnng'ed s.t an angle t.o

the a.xis cf the wheel und a circular senes of openings arranged out of line with sa.icl grooves und having their unter wolle the same dlsta.nce from tha grmding sqrfacq as the inner walls of said grooves, sa.1 ope nings being arranged a.t an angle oppos1te that cf saad grooves.

3. An abrading-wheel hvm perigheral grooves und a circ an: senes 9f opemngs in radial planes betweeu Sllld rooves und so arranged that when the Inp- %erial betweun said groovgas muu way sa1d openlngs am q:p

ose 4. An abrn g-wheel lnving aeries 6f peripherl grooves 8 i1d a Pluraljty 'of rooves und a. circular series of ois culur series of openings, said openings bein staggered und euch series be1ng arrnnged a.

an angle to the axis 01'. the wheel but at an angle opposite that cf the openings of the 5 mhacent series.

5. An nbmdingwhcel bn.ving n. plnmlity of circulur series of o;aenings arranged ab an angle t0 the axis of t e wheel, the angle cf the openings of alternate series beinm the 10 s:une direction but ab an angle'to t e axis of the wheel opposite tlmt of Uxe openings of Ihre intcrmcdiate series.

6. An abrnding body havin trausverse grooves in its grmding-iace ar x?i transverse 15 oPenings in lanes bctwecn s:ud grooves.

7. An abgading body having transverse grooyes m 1ts grmding-face and truusverse openxngs so arranged with respect to suid grooves that when the latter vunish by reason of the abmding body wearing away said gpenings become grooves on=the grinding aus. In testimony.whereof, I have afl'1xec1 mfy s1gnnture in the presence cf two subscrib'mg w1tnesses. 3

EZRA:F. LAQIS;

Wiinesses: 5

D. B. MARTIN, WEBS'I'ER Poirrnn. 

